I'm posting this for my friend. Last night he was at a local supermarket with his 2003 quad cab diesel for a short time. He then drove his truck back to the fire house to report to duty. On his way to the station his "water in fuel light" came on. He also suddenly noticed a power loss, the engine started running rough, and a large amount of white smoke was emitting from the exhaust. The distance he drove was two miles. At the station he opened the water drain on the fuel filter and noticed a bleach smell. After removing the fuel filter it was confirmed that bleach was in the fuel. He has not recently fuel up and fuel level was half a tank at the time of the incident. Tomorrow he is towing the truck to a shop to have the tank removed and drained.
1) Does anyone know what bleach can do to a diesel engine?
2) Any ideas on additives or preventive damage control?
3) Thank you for your help.